Essays on Mercury

A dental cavity in a tooth is the result of the decay process that happens over time when bacteria in the mouth produce acids. In a time, acids can dissolve enamel and cause a hole, which is known as a cavity. Unlike some other injuries, a cavity will not heal by itself and needs to be filled. Several different materials are available, and each material has advantages and disadvantages.
Dental fillings can be categorized as direct or indirect restorations. Direct restorations are fillings that get inserted into a cavity in a single visit. These substances include consisting of amalgams, Continue reading...

The problem is to test, based on the level of mercury, whether the two batches, X and Y, originated from the same catch. The statistical method used to perform this kind of test is the Mann-Whitney U-test.
Mann-Whitney U-test is used to compare whether two independent samples have been drawn from a population with the same characteristics. And it is used only when there are two samples to compare. In case there are two independent samples, Kruskal-Wallis test is used to investigate whether the samples were drawn from the population with similar characteristics.

The following steps would be followed when doing a Mann-Whitney u-test:

- Levels of mercury content in Continue reading...

The relevant stakeholders described in the articles is composed of the corporations such as Newmont Mining and the other companies involved in the mining operations. However, the most affected and considerably the important stakeholders in the case are the residents of the communities near the Yanacocha mine, and town of Choropampa. Peru’s mining history was shrouded with allegations of environmental negligence due to the issues of mercury spill that affected the nearby areas of Newmont mining site. What makes the corporations involved as stakeholders is that the company has the highest business interest in the issue given that Continue reading...

The case study analyzes the acquisition of mercury footwear by the Active Gear Inc from the West Coast Fashions. The active Gear Inc had contemplated that the acquisition would double its revenue, expand its operations through opening of both distributors and retailer shops and increasing the company’s leverage with the manufacturers. But the firm faced a lot of threats than opportunities following the acquisition.

Problem Statement:

The Active has been faced with an increased competition from other large footwear manufacturers globally. This has resulted into competitive disadvantage especially from the Chinese contracted manufacturers. In the three years that followed the Continue reading...

Introduction

Emission of the toxic substance by industries is common all over the world. Toxic substances are emitted daily by industries and anthropogenic activities. Toxic substances are categorized into three categories namely organic, inorganic and metallic compounds. Examples of organic, inorganic and metallic compounds are methane, sulfate and mercury respectively. There have been reports of these substances having negative effects on the environment. Substances like methane are responsible for increased atmospheric temperature. Sulfates affect soil. Sulfates combine with atmospheric water to form acid water. Acid water has a negative effect of soil and microorganism living in it. Mercury, on the Continue reading...

- The Role of the Doppler effect in determining the rotation rates of both Mercury and Venus
The Doppler Effect describes how waves of any kind move, depending on the direction the source of the waves is moving in and the position of the observer. For example, in the diagram below, the two individuals perceive the siren’s noise differently depending on the length of the wavelength and degree of the frequency, premised on where each person is standing.
Source: http://www.physicsclassroom.com
The rotational rate of Mercury cannot be determined through optical observation since the planet is comparatively small and is Continue reading...

Answers to Questions

Block 1: Problems, Challenges and Opportunities (Parts 1 and 2)
T207 Engineering: Mechanics, Materials, Design
Answer 1(a)
The three categories of Engineering Solutions are Innovation by Context, Innovation by Development and finally Routine Solutions. Innovation by Context will have inventions in their ranks, which relies on a new technology to bring about a solution to a problem. The ball point pen(deviating away from the liquid ink), the Gore-Tex® Fabric which is not a fabric but layers of artificial organic material making it breathable, waterproof one-way,durable,etc. and the Dyson™ Vacuum Cleaner which uses cyclonic vacuum technology Continue reading...

1- The chapter opens with these words: “ Neeru, shouei, maima, aqua. In any language, water is the most abundant compound on the surface of the Earth.”
- Explain the term compound and also why water is not an element.
Answer: Compound is a chemical entity made from combination of two or more different elements. These elements lose their individual identities when they combine to form a compound and possess unique properties subjected to that compound. Water is made from two molecules of hydrogen and one molecule of oxygen. Hydrogen and oxygen individually are elements but when combined in the Continue reading...

The James Bay Cree region covers the coast and the drainage systems of Hudson Bay in Canada. It extends from James Bay’s section of Lac Guillaume-Delisle to the Rupert’s Bay. The number of people occupying the area is approximately 12, 000 people. The whole region is under the Quebec government. There are the Coasters (Wiinibeyk Iiyuu) and in land people (Nuuchcimiihc Iiyuu) who are the main occupants of the region. They anciently depended on maritime sea mammals and fur trade for survival respectively. The inland Cree were also small-scale hunters who were in organized groups targeting the Continue reading...

Meissner effect is one of the remarkable properties of superconductors. Most superconductors are metals and metal alloys. However, some non-metals also exhibit superconductive properties hence they are regarded as superconductors. A superconductor refers to a material that can transfer electric current with zero resistance. This implies that when electric current is passed through a superconductor at a temperature below the critical temperature value (Tc), no energy is lost in any form: sound, heat, or light. It is important to point out that superconductivity of a material can only be observed at temperature below the critical temperature (Tc). Critical temperature Continue reading...

The United States and Soviet Union have always seen themselves together in the same sentence because they have always tried to one up the other. This scenario is one that is very real with regards the conquest of outer space. For some reason America seemed to be playing catch up as she was a step behind with regards exploring outer space and putting a man in space
Project Mercury is a program by NASA with an aim to launching the first Americans into space. During the duration of Project Mercury six flights were made by astronauts. Of that six, Continue reading...

The UK Queen’s song “Show Must Go On” without exaggerating the fact has become one of the most well-known inspiring songs for already 2 generations of people all over the world. Recorded in 1990 and officially released on the 14th of October 1991 the song can be easily recognized by those who like rock as a music genre, as well as those who have never been interested in rock. The reason for this is simple as it can be. “Show Must Go On” has become something more than just a song. It is also a motivation for people, Continue reading...

Question 1

Mercury is indeed an appropriate acquisition target for AGI because of several reasons. First, the acquisition of Mercury could actually financially improve both companies. Acquiring Mercury would double the revenue of AGI. In spite of the fact that the financial performance of Mercury has been relatively disappointing, the company did however experience a 20% top line growth in the year 2006.
Unfortunately, the two companies have been exhibiting disappointing profitability. This can be attributed to their prices concessions to the industry’s big retailers and also to a women’s line that was quite unsuccessful.
Therefore, the profitability of Continue reading...

Introduction

The Everglades is a part of a wide wetland system that is over 200 kilometers from the Kissimmee sequence of lakes southern through the Lake Okeechobee into the fresh water wetlands of the Everglades and to the mangrove estuaries. The southern part of end contains the Florida bay, and its associated mangrove estuaries while the western system molds into the swamps of the Big Cypress. The uplands of the program consist of pinelands, real wood jungles, and herbaceous rock lands and in the uplands contains an assortment of moderate and exotic varieties. The environment reinforced a huge range of Continue reading...

Introduction

At ambient temperature and pressure, mercury (the elemental mercury) is a metal in form of heavy silvery-white liquid. It exists in three oxidation states: mercuric Hg+2, metallic Hg, and mercuros Hg2 +2. Organic and Inorganic compounds are formed by mercuric and mercuros states. The mercuros state is unstable under environmental conditions. Mercury exists in water, sediment, soil and biota only in inorganic mercuric salts and organomercurics.
In the Cold Vapour analysis, mercury from the digest sample is reduced with either SnCl2 or NaBH4 and then measured with a conventional cold vapour flameless atomic absorption spectrometry. Continue reading...

Introduction

Autism, Aspergers’s syndrome, and pervasive development disorders are conditions which affect children during their early childhood (Scahill & Bearss, 2009). These disorders are characterized by deficits in socialization and communication as well as unusual interests and repetitive behaviours (Scahill & Bearss, 2009). The aetiology of the diseases is yet to be fully elucidated and is the subject of myths, conjecture, and wide ranging debate. A debate about a possible link between autism and vaccines in a prime-time TV show and government settlements under the vaccine protection program are some of the recent events in relation to the issue (Scahill & Bearss, Continue reading...

Introduction

The utilization of resources, while considering environmental preservation, to meet the needs of the present and future generation refers to sustainable development. The rise of industrialization and adoption of new technology has explained the growth of mobile phone communication across the world. Owning a mobile phone is a necessity more than a luxury, as many perceived some time back. However, the production process, the materials used, and the effects the gadget has on the environment after disposal has harmful effects to human development both current and future generation. This leads to the question, can the use of mobile phones Continue reading...

Abstract

Depression refers to a mental condition that is characterized by several symptoms that include but are not limited to: lethargy, isolation, prolonged periods of sadness, sudden emotional outburst such as crying for no particular reason, bouts of rage, self destructive tendencies such as cutting or biting, anxiety, paranoia, loss of appetite or unusual increase in appetite characterized by binge eating, insomnia and hostility. Recent estimates indicate that 1 out of every 10 individuals in the United States in termed as clinically depressed. The study also found that those likely to e depressed are: persons without any source of income, Continue reading...

Module 5 – Continuity Plan for Wisconsin Xcel Energy

Introduction
Xcel Energy is a United States investor-owned electricity and natural gas company with annual revenue of $10.3 billion. It performs regulated operations to provide energy to customers in eight Midwestern and Western states - Colorado, Michigan, Minnesota, New Mexico, North Dakota, South Dakota, Texas, and Wisconsin. Based in Minneapolis, Xcel provides a comprehensive portfolio of energy-related products and services to approximately 3.4 million electricity and 1.9 million natural gas customers through four utility subsidiaries—Public Service Company of Colorado (PSCo), Southwestern Public Service Company (SPS), Northern States Power Company-Minnesota (NSPM), and Northern States Power Company-Wisconsin (NSPW).
Xcel operates Continue reading...

Introduction

Panter-Brake (202) asserts that most people use beauty products with the assumption that these products have undergone thorough testing to ensure their safety before they reach the consumers. The assumption comes because the government is known to regulate most consumer products such as food, water, among others. Therefore, people expect that FDA ensures the health and safety in the cosmetic industry so as to protect consumers. Unfortunately, little power has been given to FDA in regulating cosmetics’ ingredients. The people who govern cosmetic industry are responsible for ensuring safety of the beauty products. Several studies reveal that consumer safety Continue reading...

[Author]
Human society has reached a certain level of development that everybody enjoys especially in the Western countries like the United States of America. For the convenience of human beings, people invented how to generate electricity, domesticate livestock in a large scale manner, and mass produce food. Because of these inventions, food has become more accessible to people, more technologies are invented for transportation, communication and many other essentials for communities. However, the basic element of the earth that is giving life to all creatures is at stake. The bodies of water started to be threatened by the massive Continue reading...

Term Paper

1. Lesson 4 – a. Ingeo journey refer to a journey where our responsibilities towards environment is increasing and we are taking various measures and adopting various technologies to improve the situation. To some extent we are able to reduce adverse effect on environment but this journey will go on. The concept can be implemented on three “shelf in the bookcase”. Solar energy technology help in saving the electricity and also reduce the chemicals released while production of electricity. We can save a huge quantity of water that goes in production of electricity. The same concept work in case of Continue reading...

Different Types of Lighting Available in the Market:

A broad range of lighting lamps is available in the market. Following lights are commonly used in big super markets, hotels and other bigger space places:
Incandescent: this type of light is also known as incandescent bulbs. The bulb provides light by heating a specific material kept inside the bulb in the form of filament with electricity. The filament is supported with wire on both sides. The incandescent bulbs are widely accepted and compatible with any temperature. Bulbs do not carry any hazardous material and simple in technology.
Metal Halide Light: These lamps are known for their high light Continue reading...

Introduction

The object of the paper is to analyze the above relationship over a range of pressures extending above and below atmospheric pressure.
Data were obtained for the pressure and temperature of a saturated steam-water mixture in equilibrium over a wide range of pressures and temperatures. The “raw” experimental data are given at the end of this document and the apparatus used are described below.

The object of this exercise is to:

a) Use the raw data to produce a table of absolute pressure .v. absolute (thermodynamic) saturation temperature over the whole range of the data provided.
b) Compare this data to equivalent data taken from steam Continue reading...

Introduction

At the centre of the solar system is the Sun. The nearest four planets are Mercury, Venus, Earth and Mars these are terrestrial and rocky worlds. The next four are Jupiter, Saturn, Uranus and Neptune these are gas giants. Between the orbits of Jupiter and Mars lies an asteroid belt that includes the dwarf planet of Ceres. After the orbit of Neptune, a disk shaped Kupiter belt exists where the dwarf planet Pluto exists and further beyond that there is a giant spherical Oort Cloud and the heliopause that is teardrop shaped (Choi).

History and Discovery

Many ancient astronomers thought that the Continue reading...

The National Aeronautics and Space Administration (NASA)

Prior to the first space missions that enabled the world to see beyond the planet, the public had many misconceptions over what is out there in the universe. There were a few mentions of space people that are bent in destroying mankind or even technologies that could only be seen in the future. Some also speculated that there is a different kind of world out there that is waiting to be discovered, and there were also a few who believed that once man sees the world outside Earth, a lot of unanswered questions would be brought to light such Continue reading...

Methods of Engagement in Afghanistan: Security, Identity and Economy

The cultural differences between the United States (U.S) and Afghanistan are huge. The U.S. celebrated its independence from the British Empire about 1236 years ago compared to Afghanistan’s population who has lived there for generations. The U.S. first became involved militarily there when it armed Afghan fighters against the Soviet invasion between 1979 and 1989. A devastating ten year Civil War followed. (Rohde & Crossette, 2001) Next the Taliban came to power and then lost power when the current U.S. war against Afghanistan started in 2001. Unfortunately after over a decade war in Afghanistan the suffering of the people Continue reading...

A Growing Concern in Today's EnvironmentThe article Electronic Waste: A Growing concern in Today’s Environment starts by showing stating how, there has been major developments observed in the sphere technology improvement and production over the years. As a result, the scale of electronics market has become wider and wider and spins up from day to day. According to Consumer Electronic Association, consumers purchased 800 million units of consumer electronics in 2012 "in the United States". Households in US spends approximately $1506 per year on hardware alone. Accordingly, there to improve on the efficiencies of their products in order Continue reading...

Gods and goddesses play a huge part in The Odyssey, which retells the story of a ten-year journey of Ulysses from Troy to Ithaca. The story of Ulysses’ voyage has a lot of intercession from the gods and goddesses, which either aided or hindered the men of Ulysses in going back to their home. There is a great deal of interaction between the gods and the mortals in this well-known epic. It also showed some human characteristics that may have been reflected by the gods.
Gods are there to assist or to deter the mission of the people in Continue reading...

Introduction

One of the byproducts of urban growth and development is the waste production. As per the report of the World Bank (2013), OECD countries produce almost half of the world's waste, while South Asia and Africa are listed as the regions producing the least amount of waste. The Basel Convention defines 'wastes' as substances or objects that need to be disposed of in accordance with the provisions of national law. European Waste Catalogue shows 850 types of wastes out of which 420 types of wastes have been classified as hazardous waste. Hazardous wastes are those wastes considered to be Continue reading...

Gold is and has always been a treasured metal at the center of power struggles, and its mining has a bloody history. The foundation of Rome through the gold unearthed at Gaul, Spain and the subsequent discovery, and Gold Rush in America are examples of the lure of gold and the benefits it presents to its miners. Even the recent example of the World Bank is very important in this regard. The international Bank protects its investments by pouring billions of dollars in gold mines across the globe while the labor laws continue to be poorly implemented. Pratap Chatterjee Continue reading...

1. Ecosystems.
(10 pts) Provide a review of the process of succession and trends in biodiversity, productivity, and nutrient cycling.
Ecological succession refers to the process of gradual change of the ecosystems. This is attributed to the fact that habitats do not remain constant and they keep changing over time. Succession is divided into two; there is primary succession and secondary succession. Primary succession refers to changes which occur on an environment that has never been colonized before, for instance, quarrying on land that has never been quarried before. Secondary succession on the other hand involves environmental disturbance on Continue reading...

ENGL2550, Assignment 2b, Section A01

Introduction Increasing public awareness on eco-friendly burials would benefit the world as a whole by preserving nature. An environmentally friendly burial system should be implemented in North America in order to offer a sustainable alternative to traditional burials. In the article “'Til Death Do We Pollute, and Beyond” the authors argue that the best way to ensure human burials are not hazardous to the environment is to “establishment of federal guidelines” that ban the practice of situating cemeteries on sites where there is a risk of contaminating the surrounding area (Guttman, Miller, & Watson, 2013, p. 3). Many environmentally conscious Continue reading...

ENGLISH 115

11-23-2013
Introduction
Both salty and fresh water take up to seventy-five percent of our planet’s surface. Thus, if polluted, the effects are likely to affect every life form interconnected to the ecosystem. These include humans, plants, marine, and terrestrial wildlife among others. In general, water pollution results from of the emission of organic, toxic, thermal, and non-organic wastes into water bodies. The causes can further take the form of two major levels: point source, and non-point source. Point source pollution targets water pollution agents that flow directly into large water bodies through rivers and streams. On the other Continue reading...

Executive Summary

Advancement in technology and the growth of the internet has made many individuals to increase their frequency of using digital media and online information. Equally, there has been an increased need for businesses to strengthen their online presence in order to expand their marketing capabilities and access increased customer portfolios. Another important factor that has generated is the need for online presence is the need to develop a competitive edge in the business. This can be attributed to the fact that nearly all business aspects are dependent on technology. For this reason, Worldwide Web Functions Limited is dedicated towards Continue reading...

The risks of vaccines and their association with autism remain a continuing debate between doctors, pharmaceutical companies, parents, and health advocates. The debate is often passionate and led by emotion; celebrities Jenny McCarthy and Jim Carrey providing a vocal campaign against vaccination because of vaccines’ alleged link to autism (Adams). The argument that vaccines are linked to autism generally includes the idea that it is the preservatives in vaccinations that is the link between this product and the debilitating disorder. The issue is complex and there is no simple answer.
A 2005 article in NaturalNews discusses the toxicity of Continue reading...

Introduction

Autism refers to “a life-long brain disorder that develops in young children, typically around the age of two” (National Capital of Poison Center 1). This condition is characterized by a lack of ability to create social links, reduced capability to engage in communicating with other people; both verbally as well as non-verbally, and other abnormal conduct like “constant repetition or focussing only on certain things to the exclusion of others” (National Capital of Poison Center 1). The children having autism are time and again given description to as “normal infants who then lose their ability to speak, communicate, and Continue reading...

Ethical Dilemmas for Multinational Companies

This argumentative essay tries exploring how the seemingly wise, invincible and “tall standing” multinational companies also get entangled in the web of ethical dilemmas, and their immediate response when confronted with such a morally pressing situation, in the context of their international business operations, and the extent to which it is appropriate or inappropriate in the light of relevant academic research studies and the current global legal environment.

An “ethical dilemma” is a morally pressing circumstance where an individual is required to choose between two actions to be performed, neither of which ironically offers a satisfactory resolution to the Continue reading...

Introduction

Arguably, the global pollution is tremendously in the rise. Many people visit the coastal region of Southern California Beach; hence, pollution is increasingly threatening the waters, which individuals play, and swim exposing them to the risk of illness. Studies show that approximately three beaches in Southern California were ranked the most dirtiest beaches in the nation, these included L.A County’s Avalon, Doheny Beach, and Cabrillo Beach. Undeniably, beach vocations form an annual event among many people and families in the United States. As a matter of fact, beachgoers at most polluted beaches in Southern California bring back a Continue reading...

For too long, we have tried to ignore a sneaking suspicion that as a race of people we cannot continue to use our planet’s resources in the way that we are accustomed. It has been said that we are “long on things but short on time” (see Durning 179, for example). In this essay I will look at why that is: how stress is being placed upon our water resources and upon our biosphere as a whole, and how this is generating conflict between people, governments and personal values; in addition I will consider specifically what, if any, Continue reading...